Search Results
Abstract
The inheritance of 7 characters in Raphanus sativus L. was studied. Resistant reaction to Albugo Candida race 1, Ac1 , pink pigmentation in plants, Pi, and purple colored pods in R. sativus var. caudatus. Pu, are controlled by single dominant genes, Ac1 and Pi are linked and 3.28 map units apart. Male sterility, ms1 , yellow-green leaves, yg, and cream pollen, cp, are all controlled by separate, single recessive genes. Digenic recessives, gf1gf2 , control green flecking on leaves. No linkage could be detected between Ac1 and ms1 or between ms1 and yg.
Abstract
Methomyl insecticide (Lannate 90 wp) was selectively phytotoxic on hybrids and inbreds of sweet com (Zea mays L.) having the Texas male sterile cytoplasm (T-msc). In field and greenhouse tests, phytotoxicity was visible at leaf tips and margins 2 days after a foliar application of 300 ppm methomyl. In the greenhouse, a pre- or postemergence application of methomyl, 75 mg/kg soil resulted in severe necrosis, chlorosis, and eventual death of the seedlings. None of 100 hybrids and inbreds with normal cytoplasm and 4 other different sources of sterile cytoplasm showed any visible injury following a foliar or soil application of methomyl.